CasaAmazon, the leading provider of self-custody services for Bitcoin, has announced its integration with YubiKeys, allowing users to secure their Bitcoin vaults using YubiKeys.
Yubi Keys are small physical devices that provide multi-factor authentication and securely store sensitive data such as passwords and keys. With the integration of Yubi Key support, Casa members can now use the devices as one of the keys in their multi-signature Bitcoin vaults.
When setting up a YubiKey with Casa, users generate a Bitcoin seed phrase locally on their computer. This seed is then stored on the YubiKey itself, protected by a passkey.
The integration uses passkey encryption to ensure that the seed phrase never leaves the YubiKey and can only be accessed when authenticated through the Casa service.
Kasa claims this provides superior security compared to traditional wallet recovery seeds, which can be vulnerable to phishing and theft if written down or stored digitally. With a YubiKey, the seed is cryptographically linked to the Kasa domain, preventing phishing attacks.
By integrating with YubiKeys, Casa gives its members more flexibility in securing their Bitcoin. YubiKeys offer convenience through their small size and easy tap-to-click authentication. The company plans to open-source the underlying integration code in the future.
The launch demonstrates the growing sophistication of Bitcoin self-custody methods as demand grows from both individual users and institutions to make self-custody safer, better, and easier.